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NX panel point switches

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NX panel point switches 14/11/2020 at 14:26 #133840
Steamer
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When looking through some NX panel photos (e.g. https://photos.signalling.org/picture?/25896/category/3297-2017_march ), I'm struggling to work out the purpose of the central indication lamp on the point switches.

The N and R lamps I presume are lit when the points are detected in the respective positions, but the central lamp isn't as obvious. From the photos on the linked site, as far as I can tell they don't indicate that auto mode is selected, nor do they indicate that the point is free to move.

"Don't stress/ relax/ let life roll off your backs./ Except for death and paying taxes/ everything in life.../ is only for now." (Avenue Q)
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NX panel point switches 14/11/2020 at 14:39 #133842
headshot119
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I'll open with I think the Western region E10K panels work differently with how the indications work, I'll leave it to someone else to answer how they work.

N lit - Detected Normal
R lit - Detected Reverse
C lit flashing - Points are out of correspondence. [EDIT] Actually I think flashing means the points are out of correspondence (Should be normal but are reverse for example), while lit steady is that they aren't detected in the position they currently lie in. It's been a long time since I signed Gatestown

The switch itself needs to be in the C position to allow route setting to call the points automatically to the needed position. If you move the switch to N or R you'll only be able to call routes that require those points in that position.

"Passengers for New Lane, should be seated in the rear coach of the train " - Opinions are my own and not those of my employer
Last edited: 14/11/2020 at 14:42 by headshot119
Reason: None given

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NX panel point switches 14/11/2020 at 15:28 #133844
TUT
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Minor footnote:

The C will also flash when the points are moving as they are not detected in either position when moving of course. If it continues to flash you've got a bit of a problem :P

Of course some particular designs of panel may function differently?

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NX panel point switches 14/11/2020 at 15:32 #133845
headshot119
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You're quite right of course.

Not too far off Power Operated Points on the block shelf really, white N if they're normal, white R if they're reverse, Solid white if they're in anyway unhappy. Except the solid white doesn't come up when they're travelling between positions.

"Passengers for New Lane, should be seated in the rear coach of the train " - Opinions are my own and not those of my employer
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NX panel point switches 14/11/2020 at 15:46 #133846
GeoffM
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The C light on at least one brand of panel point switches lights up if the point is locked (eg route or flank).

As you can see, there is no single standard!

SimSig Boss
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NX panel point switches 14/11/2020 at 16:39 #133848
KymriskaDraken
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GeoffM in post 133846 said:
The C light on at least one brand of panel point switches lights up if the point is locked (eg route or flank).

As you can see, there is no single standard!
You can't beat the railway for non-standard standards.

Kev

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NX panel point switches 14/11/2020 at 16:44 #133849
JamesN
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The centre red light on on WR Panel point switches is indeed a lock light

Out of correspondence is indicated by the route lights on the panel flashing alternately between Normal and Reverse

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NX panel point switches 14/11/2020 at 16:56 #133850
Splodge
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KymriskaDraken in post 133848 said:
GeoffM in post 133846 said:
The C light on at least one brand of panel point switches lights up if the point is locked (eg route or flank).

As you can see, there is no single standard!
You can't beat the railway for non-standard standards.

Kev

There's the right way, the wrong way and the railway.
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NX panel point switches 14/11/2020 at 17:15 #133851
VInce
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At Derby and Trent where I worked the centre light would flash while points were moving and would stay flashing if no detection was found, i.e. out of correspondence.

Vince

I walk around inside the questions of my day, I navigate the inner reaches of my disarray, I pass the altars where fools and thieves hold sway, I wait for night to come and lift this dread away : Jackson Browne - The Night Inside Me
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NX panel point switches 14/11/2020 at 17:37 #133855
Ron_J
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Some panel fascias have a fourth light above or below the C light to indicate whether the points are free to swing or locked by a route (or flank) rather than using the centre indication for this.
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NX panel point switches 14/11/2020 at 17:52 #133857
headshot119
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Ron_J in post 133855 said:
Some panel fascias have a fourth light above or below the C light to indicate whether the points are free to swing or locked by a route (or flank) rather than using the centre indication for this.
I'm sure I've seen one of those before Ron but I can't think where. Do you have any examples?

"Passengers for New Lane, should be seated in the rear coach of the train " - Opinions are my own and not those of my employer
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NX panel point switches 15/11/2020 at 14:13 #133883
Ron_J
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Perth for one, off the top of my head. Though I am sure I have also seen it elsewhere.
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NX panel point switches 15/11/2020 at 14:45 #133884
TUT
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Ron_J in post 133883 said:
Perth for one, off the top of my head. Though I am sure I have also seen it elsewhere.
I don't believe Perth is an example:

https://www.flickr.com/photos/llangollen_signalman/46060169191/

Although it would seem to be a prime example of a panel that uses the C light to indicate the points are locked. I had a look around for pictures of the older panel and that doesn't appear to have been any different:

https://www.flickr.com/photos/llangollen_signalman/5830019728/

Quite an unusual installation, though, Perth. Very nice, mind

Last edited: 15/11/2020 at 14:45 by TUT
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